This paper analyzes the change regularity of soil physical characteristics of degraded wetlands. Firstly

the soil profiles of degraded wetlands are been described and then that the change of soil temperature characteristics

electric conductance status

water physical property and soil bulk density are all been analyzed. The research shows that wetland soils in different degraded status have their different physical characteristics. In the typical sampling zone of wetland degradation which means primitive wetland will transform to simple degraded wetland

and then to medium degraded wetland

and then to serious degraded wetland and to cultivated wetland (farmland)

soil temperature and bulk density of wetlands increase continuously

and wetland soil electric conductance and soil bulk density trend to decrease. Compare soil surface layer (0~20 cm) and lower layer (20~40 cm)

the surface temperature

water physical property and bulk density of wetland soils are all higher. In addition

this paper gives the simulation models of spatial degradation process of different physical characteristics of degraded wetland soils

which shows that exponential growth or decay models could preferably simulate spatial degradation process of different physical characteristics of degraded wetland soils. This study will be helpful to understand the change regularity of physical characteristics of degraded wetland soils and the mechanism of wetland degradation

and will establish scientific base for restoration and reconstruction of degraded wetland.